Primary and secondary fusion magnetic control pole-mounted circuit breaker

Abstract

The utility model relates to the technical field of circuit breakers, and discloses a primary and secondary fusion magnetic control pole-mounted circuit breaker, which comprises a mounting plate, a circuit breaker body, an arc extinguish chamber and a mounting block, a connecting assembly is arranged between the mounting block and the mounting plate, and the connecting assembly comprises a connecting hole, a bolt and a nut. Clamping blocks are arranged on the outer sides of the bolts and the nuts, inner hexagonal clamping grooves are formed in the surfaces of the clamping blocks, clamping columns are evenly and fixedly connected to the opposite surfaces of every two clamping blocks, connecting plates are arranged on the outer sides of the clamping blocks, and connecting columns are fixedly connected to the opposite surfaces of every two connecting plates; limiting plates are fixedly connected to the opposite surfaces of the connecting columns. According to the utility model, through the arrangement of the connecting assembly, when equipment vibrates due to external factors such as large wind power, the bolt and the nut can be effectively prevented from loosening, equipment faults and potential safety hazards caused by loose connection are reduced, and the stability of an electric power system is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of circuit breaker especially relates to a primary and secondary fusion's magnetic control column on circuit breaker. BACKGROUND

[0002] In the power system, the primary and secondary fusion's magnetic control column on circuit breaker is usually installed in the high altitude outdoor, and the working environment is complex and changeable, and is often affected by natural factors such as wind and earthquake, especially in some areas with strong wind, the circuit breaker equipment is prone to vibration in the long-term operation process, the installation mode of the existing primary and secondary fusion's magnetic control column on circuit breaker only relies on bolt and nut to fix, when facing continuous vibration, the bolt and nut are prone to loosening, once the bolt and nut are loosened, the connection between the circuit breaker and the mounting plate is unstable, thereby causing the circuit breaker position deviation, poor contact problem, and further affecting the normal opening and closing operation of the circuit breaker, even leading to the circuit breaker unable to work normally, which seriously threatens the safe and stable operation of the power system. SUMMARY

[0003] In view of the defects of the prior art, the utility model provides a primary and secondary fusion's magnetic control column on circuit breaker, which has the advantages of stable installation, solves the problem that the existing primary and secondary fusion's magnetic control column on circuit breaker is installed in the high altitude, is prone to vibration by external factors, causes the bolt on the equipment to loosen, and affects the use safety and the stability of the equipment.

[0004] The utility model provides the following technical scheme: a primary and secondary fusion's magnetic control column on circuit breaker, including mounting plate, circuit breaker body, arc extinguishing chamber and mounting block, be provided with connecting assembly between mounting block and mounting plate, connecting assembly includes connecting hole, bolt and nut, the outside of each bolt and nut is provided with clamping block, the surface of clamping block is all set up internal hexagon clamping groove, the opposite surface of two two clamping blocks is uniformly connected with clamping column, the outside of clamping block is provided with connecting plate, the opposite surface of two two connecting plates is fixedly connected with connecting column, the opposite surface of connecting column is fixedly connected with limit board, the edge surface of limit board is evenly set up clamping groove, the opposite surface of two two limit boards is fixedly connected with stretch spring, the outside of stretch spring is provided with connecting barrel, the inner wall surface of connecting barrel is uniformly fixedly connected with limit column, the opposite surface of mounting block and mounting plate is evenly set up limit slot, when clamping block is respectively clamped in the outer surface of bolt and nut through the internal hexagon clamping groove set up on its surface, clamping block can be in close contact with bolt and nut, and clamping block can clamp bolt and nut, prevent its loosening, enhance the stability of bolt and nut connection, thereby guarantee the stability of the connection between circuit breaker body and mounting plate.

[0005] Preferably, the arc extinguishing chamber is uniformly arranged on the top surface of the circuit breaker body, the mounting block is fixedly connected to the side wall surface of the circuit breaker body, and the arc extinguishing chamber is uniformly provided with arc extinguishing grids and insulating gas.

[0006] Preferably, the connecting holes are symmetrically arranged on the top surfaces of the mounting block and the mounting plate, the bolts are slidably connected to the inner surfaces of the connecting holes, the nuts are threadedly connected to the surfaces of the bolts, the bolts and the nuts are hexagonal structures, and the nuts are arranged below the mounting plate.

[0007] Preferably, the clamping blocks are slidably connected to the outer surfaces of the corresponding bolts and nuts through the inner hexagonal clamping grooves, the clamping columns are slidably connected to the inner surfaces of the limiting grooves, the number of the clamping columns and the limiting grooves is the same, and each group is provided with at least four clamping columns and limiting grooves, the clamping columns fixedly connected to the clamping blocks are slid into the limiting grooves uniformly arranged on the opposite surfaces of the mounting block and the mounting plate, so that the clamping blocks are effectively limited and prevented from rotating.

[0008] Preferably, the connecting barrels are middle-through structures, the connecting columns are slidably connected to the inner surfaces of the corresponding connecting barrels, the limiting plates are slidably connected to the inner surfaces of the connecting barrels, the limiting plates are circular structures, the diameters of the limiting plates are greater than the diameters of the connecting columns, the limiting plates are slidably connected to the surfaces of the limiting columns through the clamping grooves, and the extension springs are arranged in the connecting barrels.

[0009] Preferably, the outer sides of the clamping blocks are provided with protection assemblies, the protection assemblies comprise first protection covers fixedly connected to the top surfaces of the clamping blocks above the mounting blocks, second protection covers fixedly connected to the bottom surfaces of the clamping blocks below the mounting blocks, the first protection covers are sleeved on the top surfaces of the bolts, the second protection covers are sleeved on the bottom surfaces of the bolts, the connecting plates are fixedly connected to the surfaces of the corresponding first protection covers, and the connecting plates are fixedly connected to the surfaces of the corresponding second protection covers.

[0010] Compared with the prior art, the arc extinguishing chamber has the following beneficial effects:

[0011] 1、Through the setting of the connecting assembly, the clamping block is connected with the bolt and the nut by operation, and the clamping column is slid into the limiting groove by the reset action of the tension spring, effective limiting is realized, when the equipment vibrates due to large wind and other external factors, the bolt and the nut can be effectively prevented from loosening, the stability of the connection between the circuit breaker body and the mounting plate is ensured, the reliable operation of the entire circuit breaker in complex environment is ensured, the equipment failure and safety hazards caused by loose connection are reduced, the maintenance cost is reduced, and the stability of the power system is improved.

[0012] 2、The first protective cover and the second protective cover in the protective assembly are respectively sleeved on the top and the bottom surface of the bolt, because the waterproof and corrosion-resistant material is adopted, the bolt and the nut can be protected in all directions, the bolt and the nut are prevented from being eroded by external moisture, dust and corrosive substances, the service life of the bolt and the nut is prolonged, and the equipment maintenance and replacement cost caused by damage of the bolt and the nut is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a front view of the structure of the utility model;

[0014] Figure 2 It is a schematic view of the connecting assembly in the structure of the utility model;

[0015] Figure 3 It is a schematic view of the clamping block in the structure of the utility model;

[0016] Figure 4 It is a schematic view of the connecting barrel in the structure of the utility model;

[0017] Figure 5 It is Figure 3 It is an enlarged view of A in the structure of the utility model.

[0018] In the drawing: 1, mounting plate; 2, circuit breaker body; 3, arc extinguishing chamber; 4, mounting block; 5, connecting assembly; 51, connecting hole; 52, bolt; 53, nut; 54, clamping block; 55, internal hexagonal clamping groove; 56, clamping column; 57, connecting plate; 58, connecting column; 59, limiting plate; 511, clamping groove; 512, tension spring; 513, connecting barrel; 514, limiting column; 515, limiting groove; 6, protective assembly; 61, first protective cover; 62, second protective cover. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0020] Referring to Figure 1 - Figure 5 The utility model provides an embodiment: a primary and secondary fusion magnetic control column on circuit breaker, including mounting plate 1, circuit breaker body 2, arc extinguishing chamber 3 and mounting block 4, be provided with connecting assembly 5 between mounting block 4 and mounting plate 1, connecting assembly 5 includes connecting hole 51, bolt 52 and nut 53, the outside of every bolt 52 and nut 53 is provided with the clamping block 54, the surface of clamping block 54 is provided with the internal hexagon clamping groove 55, the opposite surface of two clamping blocks 54 is uniformly fixedly connected with the clamping column 56, the outside of clamping block 54 is provided with the connecting plate 57, the opposite surface of two connecting plates 57 is fixedly connected with the connecting column 58, the opposite surface of connecting column 58 is fixedly connected with the limiting plate 59, the edge surface of limiting plate 59 is uniformly provided with the clamping groove 511, the opposite surface between two limiting plates 59 is fixedly connected with the tension spring 512, the outside of tension spring 512 is provided with the connecting barrel 513, the inner wall surface of connecting barrel 513 is uniformly fixedly connected with the limiting column 514, the opposite surface of mounting block 4 and mounting plate 1 is uniformly provided with the limiting slot 515, arc extinguishing chamber 3 is uniformly set in the top surface of circuit breaker body 2, mounting block 4 is fixedly connected to the side wall surface of circuit breaker body 2 oppositely, connecting hole 51 is all symmetrically set in the top surface of mounting block 4 and mounting plate 1, bolt 52 is all slidingly connected in the inside of corresponding connecting hole 51, nut 53 is threadedly connected on the surface of bolt 52, and bolt 52 and nut 53 all are hexagonal structure, and nut 53 all are set in the below of mounting plate 1, clamping block 54 all are slidingly connected on the outer surface of corresponding bolt 52 and nut 53 through internal hexagon clamping groove 55, clamping column 56 all are slidingly connected in the inside of limiting slot 515, and the number of clamping column 56 and limiting slot 515 is same, and every group is provided with at least four, connecting barrel 513 all are middle through structure, connecting column 58 all are relatively slidingly connected in the inside of corresponding connecting barrel 513, limiting plate 59 all are slidingly connected in the inside of connecting barrel 513, limiting plate 59 is circular structure, and the diameter of limiting plate 59 is greater than the diameter of connecting column 58, limiting plate 59 all are slidingly connected on the surface of limiting column 514 through clamping groove 511, and tension spring 512 all are set in the inside of connecting barrel 513.

[0021] Referring to Figure 1 - Figure 5The outer side of the clamping block 54 is provided with a protection assembly 6, the protection assembly 6 comprises a first protection cover 61 fixedly connected to the top surface of the clamping block 54 above the mounting block 4, the bottom surface of the bottom clamping block 54 is fixedly connected with a second protection cover 62, the first protection cover 61 is sleeved on the top surface of the bolt 52, the second protection cover 62 is sleeved on the bottom surface of the bolt 52, the top connecting plate 57 is fixedly connected to the surface of the corresponding first protection cover 61, the bottom connecting plate 57 is fixedly connected to the surface of the corresponding second protection cover 62, the first protection cover 61 and the second protection cover 62 are made of waterproof and corrosion-resistant materials, the magnetic control circuit breaker with primary and secondary fusion adopts magnetic control technology to realize the opening and closing operation, the core lies in that the change of the magnetic field is used to control the action of the internal contact, the magnetic control system is prior art, mainly comprising a magnetic control coil, a permanent magnet, a driving mechanism and a contact assembly;

[0022] The closing process: when the circuit breaker body 2 needs to be opened and closed, the secondary intelligent control system will send corresponding control signals to the magnetic control coil according to the detected circuit state information, when the system detects that the circuit needs to be closed to turn on the circuit, the secondary intelligent control system applies a forward current to the magnetic control coil, the forward current generates a specific magnetic field in the magnetic control coil, the magnetic field interacts with the magnetic field generated by the permanent magnet to form a driving force, under the action of the driving force, the driving mechanism starts to act, pushes the moving contact in the contact assembly to move towards the static contact, as the moving contact continuously approaches, the gap between the moving and static contacts gradually decreases, when the moving contact completely contacts the static contact, the circuit is turned on, realizing the closing operation, at this time, the magnetic control system will continuously monitor the contact state to ensure good contact to ensure the stable conduction of the circuit;

[0023] The opening process: when a fault occurs in the circuit, such as overload, short circuit or needs to be disconnected, the secondary intelligent control system applies a reverse current to the magnetic control coil, the magnetic field generated by the reverse current interacts with the magnetic field of the permanent magnet to generate a driving force in the opposite direction of the closing, under the action of the reverse driving force, the driving mechanism drives the moving contact to quickly move away from the static contact, the gap between the moving and static contacts continuously increases, the circuit is disconnected, completing the opening operation, during the opening process, the magnetic control system accurately controls the opening speed and time to ensure the reliability and rapidity of the opening, reducing the influence of the fault on the power system;

[0024] The arc extinguishing chamber 3 is uniformly arranged on the top surface of the circuit breaker body 2, the arc extinguishing chamber 3 is prior art, the arc extinguishing chamber 3 is composed of arc extinguishing grid plates and an insulating shell, the arc extinguishing grid plates are designed with special materials and shapes, which can divide the arc into multiple short arcs, thereby accelerating the extinction of the arc, the insulating shell plays a role in isolating the arc and protecting the internal components, preventing the arc from leaking and causing damage to the surrounding environment and equipment,

[0025] Arc extinguishing during closing: During the closing process of the circuit breaker body 2, although the dynamic and static contacts will not produce obvious arc at the moment of contact under normal circumstances, but in some special cases, such as the existence of dirt and oxidation layer on the surface of the contacts, a weak arc may be produced at the moment of contact. At this time, the arc extinguishing chamber 3 begins to play a role. The insulation environment inside the arc extinguishing chamber 3 can limit the development space of the arc, and the arc extinguishing grid can preliminarily guide and divide the weak arc that may be produced, prevent the arc from further expanding, and ensure the smooth progress of the closing process.

[0026] Arc extinguishing during opening: When the circuit breaker body 2 performs opening operation, the dynamic and static contacts begin to separate. Because there is current in the circuit, an arc will be generated in the contact gap. Once the arc is generated, its high temperature and high energy will cause serious ablation to the contacts and also affect the normal opening of the circuit. At this time, the arc extinguishing chamber 3 quickly intervenes in the arc extinguishing process. The arc extinguishing grid divides the arc into multiple short arcs. According to the near-cathode effect, a layer of positive ion layer will be formed near the cathode of each short arc at the moment after the arc current crosses zero, which makes the arc voltage rise rapidly. The rise of the arc voltage leads to the rapid reduction of the arc current, thereby limiting the further development of the arc. At the same time, the insulation gas such as sulfur hexafluoride in the arc extinguishing chamber 3 will cool and de-ionize the arc. The cooling effect can reduce the temperature of the arc and reduce the thermal ionization phenomenon in the arc. The de-ionization effect promotes the charged particles in the arc to recombine into neutral particles, reducing the number of charges in the arc and further weakening the strength of the arc. Under the joint action of the division of the arc extinguishing grid, cooling and de-ionization, the arc gradually becomes thin and short, and finally extinguishes. The entire arc extinguishing process is completed in a very short time, usually within a few milliseconds to tens of milliseconds, which ensures that the circuit breaker can quickly and reliably cut off the circuit and protect the safety of the power equipment and line.

[0027] Working principle: during installation, first, the circuit breaker body 2 is connected with the mounting plate 1 through the mounting block 4, at this time, the connecting holes 51 symmetrically opened on the mounting block 4 and the mounting plate 1 are aligned with each other, then the bolts 52 are slid into the connecting holes 51 on the surface of the mounting block 4 and penetrate through the corresponding connecting holes 51 on the mounting plate 1, and then the nuts 53 are screwed onto the surface of the bolts 52 from below the mounting plate 1, as the nuts 53 are continuously tightened, the mounting block 4 and the mounting plate 1 are preliminarily fixed, then the operator pulls the clamping blocks 54 in opposite directions at the same time, at this time, the clamping blocks 54 above the mounting block 4 drive the top connecting plates 57 to move upwards through the first protective covers 61 fixedly connected to the top surface of the clamping blocks 54, the clamping blocks 54 below the mounting plate 1 drive the bottom connecting plates 57 to move downwards through the second protective covers 62 fixedly connected to the bottom surface of the clamping blocks 54, the top and bottom connecting plates 57 respectively drive the corresponding connecting columns 58 and limiting plates 59 to slide in opposite directions in the connecting barrels 513, in this process, the clamping grooves 511 on the edge surface of the limiting plates 59 will slide on the surface of the limiting columns 514, the limiting columns 514 further limit the limiting plates 59 to ensure stable sliding of the limiting plates 59 and prevent them from rotating in the connecting barrels 513, at the same time, the extension springs 512 are stretched, when the clamping blocks 54 move to the appropriate position, the operator slides the inner hexagonal clamping grooves 55 opened on the surface of the clamping blocks 54 to the outer surfaces of the bolts 52 and the nuts 53 respectively, then releases the clamping blocks 54, the extension springs 512 contract and reset, driving the limiting plates 59, the connecting columns 58, the connecting plates 57 and the clamping blocks 54 to move towards each other, so that the clamping columns 56 fixedly and uniformly connected to the clamping blocks 54 slide into the limiting grooves 515 uniformly opened on the opposite surfaces of the mounting block 4 and the mounting plate 1, since the number of the clamping columns 56 and the limiting grooves 515 is the same and each group is set to at least four, the clamping blocks 54 can be effectively limited to prevent them from rotating, when the inner hexagonal clamping grooves 55 opened on the surface of the clamping blocks 54 are clamped on the outer surfaces of the bolts 52 and the nuts 53 respectively, the connecting barrels 513 are located outside the mounting block 4 and the mounting plate 1, at this time, the connecting barrels 513, the connecting plates 57 and the clamping blocks 54 form a U-shaped structure to enhance the stability of the connection between the bolts 52 and the nuts 53, when the equipment vibrates due to strong wind, the connecting barrels 513 are displaced to the side edges of the mounting block 4 and the mounting plate 1 at most, since the inner hexagonal clamping grooves 55 opened on the surface of the clamping blocks 54 are clamped on the outer surfaces of the bolts 52 and the nuts 53 respectively, and the connecting barrels 513 abut against the side edges of the mounting block 4 and the mounting plate 1, the bolts 52 and the nuts 53 cannot be loosened, thereby ensuring the stability of the connection between the circuit breaker body 2 and the mounting plate 1, at the same time, in the protective assembly 6, the first protective cover 61 is sleeved on the top surface of the bolt 52 and the second protective cover 62 is sleeved on the bottom surface of the bolt 52, since the first protective cover 61 and the second protective cover 62 are made of waterproof and corrosion-resistant materials, they can protect the bolts 52 and the nuts 53 from erosion by the external environment and prolong their service life, in terms of magnetic control,The circuit breaker realizes the opening and closing operation of the circuit breaker through magnetic control technology, utilizes the generation and change of the magnetic field to control the action of the internal contact of the circuit breaker, thereby controlling the on-off of the circuit, and the arc extinguishing chamber 3 is uniformly arranged on the top surface of the circuit breaker body 2; when the circuit breaker body 2 performs the opening and closing operation, the arc generated in the circuit is divided into multiple short arcs by the arc extinguishing grid inside the arc extinguishing chamber 3, the arc voltage rapidly rises under the near-cathode effect of the arc, so that the arc current rapidly decreases, at the same time, the arc is cooled and ionized in the arc extinguishing chamber 3, thereby extinguishing the arc in time, ensuring the safe operation of the equipment, when disassembly is needed, the above mounting steps are operated in reverse, the clamping block 54 is first taken off from the surface of the bolt 52 and the nut 53, the nut 53 is finally screwed off, the bolt 52 is pulled out, and the separation of the mounting block 4 and the mounting plate 1 is realized, and the disassembly of the circuit breaker body 2 is completed.

Claims

1. A magnetically controlled pole-mounted circuit breaker integrating primary and secondary circuits, comprising a mounting plate (1), a circuit breaker body (2), an arc-extinguishing chamber (3), and a mounting block (4), characterized in that: A connecting component (5) is provided between the mounting block (4) and the mounting plate (1); The connecting assembly (5) includes a connecting hole (51), a bolt (52), and a nut (53). Each bolt (52) and nut (53) has a retaining block (54) on its outer side. Each retaining block (54) has an internal hexagonal groove (55) on its surface. A retaining post (56) is uniformly fixedly connected to the opposing surfaces of each pair of retaining blocks (54). A connecting plate (57) is provided on the outer side of each retaining block (54). A connecting post (58) is fixedly connected to the opposing surfaces of each pair of connecting plates (57). Limiting plates (59) are fixedly connected to the opposite surfaces of the column (58). The edge surface of the limiting plate (59) is uniformly provided with slots (511). Tension springs (512) are fixedly connected between the opposite surfaces of the two limiting plates (59). Connecting barrels (513) are provided on the outside of the tension springs (512). Limiting columns (514) are uniformly fixedly connected to the inner wall surface of the connecting barrels (513). Limiting grooves (515) are uniformly provided on the opposite surfaces of the mounting block (4) and the mounting plate (1).

2. The magnetically controlled pole-mounted circuit breaker with primary and secondary integration according to claim 1, characterized in that: The outer side of each of the card blocks (54) is provided with a protective component (6). The protective component (6) includes a first protective cover (61) fixedly connected to the top surface of the card block (54) above the mounting block (4), and a second protective cover (62) fixedly connected to the bottom surface of each of the card blocks (54). The first protective cover (61) is fitted onto the top surface of the bolt (52), and the second protective cover (62) is fitted onto the bottom surface of the bolt (52). The top connecting plate (57) is fixedly connected to the surface of the corresponding first protective cover (61), and the bottom connecting plate (57) is fixedly connected to the surface of the corresponding second protective cover (62).

3. The magnetically controlled pole-mounted circuit breaker with primary and secondary integration according to claim 2, characterized in that: The arc-extinguishing chambers (3) are evenly arranged on the top surface of the circuit breaker body (2), and the mounting blocks (4) are relatively fixedly connected to the side wall surface of the circuit breaker body (2).

4. The magnetically controlled pole-mounted circuit breaker with primary and secondary integration according to claim 1, characterized in that: The connecting holes (51) are symmetrically opened on the top surface of the mounting block (4) and the mounting plate (1). The bolts (52) are slidably connected inside the corresponding connecting holes (51). The nuts (53) are threadedly connected to the surface of the bolts (52). The bolts (52) and nuts (53) are both hexagonal in shape. The nuts (53) are all located below the mounting plate (1).

5. The magnetically controlled pole-mounted circuit breaker with primary and secondary integration according to claim 1, characterized in that: The locking blocks (54) are all slidably connected to the outer surfaces of the corresponding bolts (52) and nuts (53) through internal hexagonal slots (55). The locking pins (56) are all slidably connected inside the limiting grooves (515). The number of locking pins (56) and limiting grooves (515) is the same, and each group has at least four.

6. The magnetically controlled pole-mounted circuit breaker with primary and secondary integration according to claim 1, characterized in that: All connecting barrels (513) are through-hole structures. All connecting columns (58) are slidably connected to the interior of the corresponding connecting barrels (513). All limiting plates (59) are slidably connected to the interior of the connecting barrels (513). The limiting plates (59) are circular structures, and the diameter of the limiting plates (59) is larger than the diameter of the connecting columns (58). All limiting plates (59) are slidably connected to the surface of the limiting columns (514) through the slots (511). All tension springs (512) are set inside the connecting barrels (513).

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